Philips Repair Tips

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Make	Model	Symptom	Problem
PHILIPS	MD2.21E	Subpages not stored/updated in menubar	Check whether jumper 4400 is present on txt-control panel. if not present, mount jumper. the location is between x-tal 1201 and txt ic7400. codenumber jumper: 4822 051 20008.
PHILIPS	MD2.21E	Stand-by led flashing after start up	Errors 47, and possible 69 are indicated. solution: on lsp probably hfb signal not present caused of defective r3609, 4k7, 4822 052 10472.
PHILIPS	MD2.21E	Sometimes still picture occurs	Check and replace if necessary ic7400/ic7441 (tda8753an; 4822 209 90528) on the feature box.
PHILIPS	MD2.21E	Set switches to stand-by	Change software into the v_3104 317 00890 (4822 900 11058) remarks : introduced in production from week 9737 onwards.
PHILIPS	MD2.21E	Set inoperative. red led flashing. err 47 44 48 69 88	Check and replace if necessary resistor r3609 (4k7; 4822 052 10472) on the lsp.
PHILIPS	MD2.21E	Set in protection with several error codes in the error buffer	Errors caused by intermittent i2c communication problems. usually one of the error codes is related to the msp34x0 sound processor. check pin 12 of connector i46 on the audio module (scl line). look for a badly soldered (oxidated) pin 12. resolder pin 1
PHILIPS	MD2.21E	Set can go into protection by switching on.	Change capacitor c2524 (parallel to c2525) into 10uf (4822 124 41579).
PHILIPS	MD2.21E	Service hint	Service hint ------------ check the vdr on the mainsfilter panel. if this is defective, replace the old vdr (4822 116 21217) by a new one (4822 116 10065). remarks : introduced in production from week 9752 onwards.
PHILIPS	MD2.21E	Seagull effect in the top of the screen	Add north south panel 4822 212 11564 on position l91 of the lsp. remove bridge wire 9621. add bridge wires 9431, 9442 and 9443. remarks : this is only a service solution and will not be implemented in production.
PHILIPS	MD2.21E	S1, s2 and s3 channels unselectable	S1, s2 and s3 channels are unselectable in channel mode. replace position 7202 on the txt & control module with: 4822 900 11102 software for non epg sets 4822 900 11066 software for -/58 sets 4822 900 11058 software for epg sets remarks : iri
PHILIPS	MD2.21E	Picture rotated in 28" ws sets	The following service solution can be applied to solve the rotation problem: 1. add the north/south panel: 4822 212 11287 2. mount rotation coil on the picture tube neck: 4822 157 70615 and connect it to the free connector (y90) on the north/south pa
PHILIPS	MD2.21E	Picture distortions on canal+ and fr2	Change resistor r3141 on the if module into 180Ω (4822 117 11448).
PHILIPS	MD2.21E	Noise from power supply transformer	Add a capacitor of 100pf (4822 121 51288) in parallel to position 2531 (1nf) on the large signal panel. remarks : iris symptom code 1144
PHILIPS	MD2.21E	Noise (humming or low frequency whistle) coming from the picture tube	Mount bleeder (4822 310 11113) between lot and picture tube. if problem still exist anti crackling coating (acc) can be applied. the code number for this acc is 4822 390 10166. the acc is supplied with complete instructions how to apply. remarks
PHILIPS	MD2.21E	Noise (humming or low frequency whistle) coming from the picture tube	Mount a bleeder (ht capacitor) between the lot and the picture tube. this bleeder is supplied as a service kit (4822 310 11113) and include all material and an instruction note. remarks :iris symptom code 2145
PHILIPS	MD2.21E	No txt, no menu, no osd	Check and replace if necessary x-tal position 1201 on the txt&control panel (27mhz; 4822 242 81191).
PHILIPS	MD2.21E	No sound, picture ok	Check voltage of pin 2 of ic7761 (tda2616) on the large signal panel. when this voltage is not correct check and replace if necessary d6754 (bzx79-c18; 4822 130 31024).
PHILIPS	MD2.21E	No sound in headphone after switching to canal+	When switching from a channel to canal+, the sound on the headphone disappears. there is still sound in the loudspeakers of the set. after switching to another channel the sound in the headphone comes back again. this problem only occurs when the decoder
PHILIPS	MD2.21E	No picture. sound, menu and txt are ok.	Check pins of connector o55 on the combfilter panel. look for badly soldered (oxidated) pins. resolder the pins if required. remarks : improved connectors introduced in production from week 9742 onwards.
PHILIPS	MD2.21E	No picture, sound ok	Check the "customer service mode": press mute (remote control) and menu (local control) at the same time for 3 seconds. if the pp values are at zero then these values should be changed.